Zhang Lin, Yue Yang, Xiao-Li Yinying, Wang Jian, Beausoleil Raymond G, Willner Alan E
Department of Electrical Engineering, University of Southern California, Los Angeles, CA 90089, USA.
Opt Express. 2010 Jun 7;18(12):13187-93. doi: 10.1364/OE.18.013187.
We propose highly nonlinear slot waveguides with flat and low dispersion over a wide wavelength range. Si nano-crystal and chalcogenide glass are considered as slot materials. Over a 244-nm bandwidth, dispersion of 0+/-0.16 ps/(nmxm) is achieved in a silicon nano-crystal slot waveguide, with a nonlinear coefficient of 2874 /(Wm). The As(2)S(3) slot waveguide exhibits dispersion of 0+/-0.17 ps/(nmxm) over a bandwidth of 249 nm, with a nonlinear coefficient 16 times larger than that of As(2)S(3) rib waveguides and a nonlinear figure of merit three times larger than that of Si strip waveguides.
我们提出了在宽波长范围内具有平坦且低色散的高度非线性狭缝波导。硅纳米晶体和硫族化物玻璃被视为狭缝材料。在硅纳米晶体狭缝波导中，在244纳米带宽上实现了0±0.16皮秒/（纳米·米）的色散，非线性系数为2874 /（瓦·米）。As₂S₃狭缝波导在249纳米带宽上表现出0±0.17皮秒/（纳米·米）的色散，其非线性系数比As₂S₃脊形波导大16倍，非线性品质因数比硅条形波导大三倍。
